Event: Division 1

Opponent Rating Result
Duncan Dicks 2101 0 - 1
Peter Dhonau 1975 0 - 1
Rob E Wilden 1716 0 - 1
Alun Richards 1697 ½ - ½
Tom A Cleverley 1401 1 - 0
John S Burrows 1548 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1540 = (10438 + 400 * (1 - 4)) / 6)

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